package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;

import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Component
@Service
@ApiOperation("添加购物车")
public class ShoppingCartServiceImpl  implements ShoppingCartService {
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    @Override

    /**
     * 添加购物
     * @param shoppingCartDTO
     */
    public void addShoppingCart(ShoppingCartDTO shoppingCartDTO) {

        //判断当前购物车中是否存在该商品
        ShoppingCart shoppingCart =new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO, shoppingCart);
        Long userId = BaseContext.getCurrentId();
        shoppingCart.setUserId(userId);

        List<ShoppingCart> list =shoppingCartMapper.list(shoppingCart);
        //如果存在数量加1 如果不存在 添加到购物车
        if(list !=null&& list.size()>0){
            ShoppingCart cart = list.get(0);
            cart.setNumber(cart.getNumber()+1);
            shoppingCartMapper.updateNumberById(cart);
        }else {
            //判断加的是商品还是套餐
            Long dishId = shoppingCartDTO.getDishId();
            log.info("dishId:{}",dishId);
            if(dishId!=null)
            {
                Dish dish= dishMapper.getById(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());

            }
            else {
                Long setmealId = shoppingCartDTO.getSetmealId();
                Setmeal setmeal = setmealMapper.getById(setmealId);
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setAmount(setmeal.getPrice());

            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);


        }
    }
     public List<ShoppingCart> showShopingCart(){
        Long userId=BaseContext.getCurrentId();
         ShoppingCart shoppingCart = ShoppingCart.builder()
                 .userId(userId)
                 .build();
         List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
         return list;
     }
     public void cleanShoppingCart()
    {Long userId=BaseContext.getCurrentId();
        shoppingCartMapper.deleteByUserId(userId);

    }
}

